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US 6,957,533 B1Granted
Operation device
AssigneeBesam International HB
InventorOlle Olsson
Life of this patent
Estimating the term…
Abstract
The invention relates to a device for opening of doors. Electromechanical systems contain many expensive components and are thereby expensive to manufacture. Installed electromechanical systems are expensive in operation by virtue of the high and energy-demanding friction which always are present in mechanical constructions. The present operating device is less energy-demanding by the formed transmission of power via two piston-like parts (5 and 6). A driving device (2) is arranged to drive the piston-like part (5) and the second piston-like part (6) is connected to an operable element.
Claims15
Operation device for closures comprising:
- a driving device;
- a closed house;
- a first piston-like part and a second piston-like part, wherein the first and second piston-like parts are displaceable inside the house and are arranged at a distance from each other inside the house, and where the driving device is arranged to displace the first piston-like part inside the house and the second piston-like part being connected to an operable element;
- an electric current-controlled valve is arranged in a wall of the house;
- and
- wherein a volume formed in the closed house, between the first and the second piston-like parts, is filled with a compressive force transmitting medium.
3 more elements
Dependencies are inferred from the claim text.